Typewriting machine



March 8 1 1927- y G. K. BLOCK TYFEWRITING MACHINE Filed July 2e,

1926 3 Sheets-Sheet BY yo/M Mld/0W ATTORNEY March 8,1927. 1,620,004

, G. K. BLOCK TYPEWRITING MACHINE Filed July 26, 1926 ZV-sneets-Sheet 2 Y//l o y INVENTOR ATTORNEY 1927. March 8 G. K. BLOCK TYPEWRITING MACHINE Filed July 2-, 1926 I5 Sheets-Sheet 5 INVENToR ATTORNEY Patented Mar. 8, '1927.

i izosai GREGORY K. BLOCK, or maw YORK, n. Y.

TYPEWRTING lVlIlrCIEliINE.

Applicationv ned iuiy 2s, ieee. serian No. 124,972.

My invention relates to typewriting ma-` chines and has a particular reference to carriage arrangement and mechanism. l

The object of my invention is to provide a simple carriage for typewriting machines with new and improved attachments andwof an improved design, which could be easily removed from the machine to, be `replaced with anotherl carriage of a different length,

when necessary. p r

Another objectotmy invention is to provide a carriage which could beeasily turned over on its hinges so as to provide lan easy access to the inside mechanism of the machine., i r

I also provide ball bearings throughout 'for the carriage mounting in order to reduce theA friction inits longitudinal movements and the wear ot parts. 1

This invention represents `an improvement over my carriage as 'disclosed ininy Patent No. 1,594,768 of Aug. 3, 1926. The improvement consists chiefly in dividing the carriage into two parts: on-e removably hinged on the frame of the typewriting machine and form-ing a carriage support, and the other, main support of the carriage, slidably mounted on the above hinged part.

Vith this arrangement the replacement of the carriages for different length ot the work is simplified, as only sliding portion determines the total length of the machine, and it can. be easilyT removed byremoving two pins on which the supporting part .is pivoted. Vith a short carriage the whole machine is also short, not requiring an extra lengthto accommodate longer carriages. I have also improved the mechanism for raising the carriage and the looking device.`

A My invention is more fully explained in the accompanying specification and drawings in which- A Fig. 1 is a sectional elevation of my typewritingmachine, Fig. 2 is a partial front view, Fig. 3 is a sectional elevation showing the carriage turned over on its hinges, and

Fig, 4 is a plan View. 4 y r My carriage consists of two end brackets l joined together with rods 2 which also serve as paper guides forming apcarriage frame. The brackets are provided with bearings for journals 3 (Fig. 4) of a drum 4 for the writing paper (not shown). The drum is covered with rubber 5 elastic n'iaterial.

or similar The brackets 1 are provided lugs 6 to which adrear sliding or connecting member is attached by means otascrews 8.` This member is vfinished smoothlyon theinside forming an upper race for thebalfls ,9u The lower race for the'balls 10 is formed the lower plate 1l, attach-ed to the member 7 with Screws 12. The exactposition ofthe lower plate is adjusted by means of removable liners or shims 13. 1 r r r y Y The balls 10 are placed in cups orrraces14 'formed between platesl. Theseplates Aare provided with brackets lor lugs 16 forming a carriage `support rotat-ively mounted on pins 17. These pins are inserted Yinto the brackets 17 through stationary lugs 18 on the frame 19 of the typewriting machine. They are held in place by springj'sQO attached to the :frame 19 Vwith scretrvs 21 (Fig. 1). They are provided with notches 22v (Fig.r4) fitting intodepressions in the ends of the thumb heads 23 (Fig. 4) of the pins.` In order to remove the pin the spring 2O isbent ont and turned sideways thereby releasing the thumb head which can be then `pulled outl withrthe pin. Y,

Lugfs 24 areralso provided on the end brackets and support the ends of the bar 25. This bar supports adjust-ablesliding blocks which are used tostop the carriage at the end of the line and to ring' the bell (as eX- plaiued in my Patent No. 1,594,768).

A, rack bar 2G is supported fon `arms 27 rotating on the rod 28. Thisbar isord'inarily in an engagement with a pinion 29 on a shaft 30. The shaft is journaled ina bearing-,31 in a bracket 32 attached with one Side to the rear wall oit the trame 19. AThe trent end o-t this` bracket is attachedto a cross bar 33 joining the sides ot the-trame 19 and. supporting at the front a type bar segment 34. This segment is provided with slOts 35` (Fig. 4) for type bars 36 (Fig. A; guide 37 directs the type bars at the right spot 4on the paper `and against an ink ribbonSS.

The front ends of brackets 1 are provided with lugs 39 supporting front bar 40. This bar rests onroll'ers 41on` pins 42 set in a trame 43. This frame or bar has ends slotted -for these rollers and also for the ,endsI of vertical members 44 held with pins 45 4). The lowerends of members -44 are pivoted with 4pins 46 to levers 47l rotatively mounted on pin-s or bolts 48Y and supported on the crossA 58 which supports in the middle a bracket 59 with an upper' or retaining roller 60. This .roller keeps the front bar 4() in an engagement with the lower rollers 41.

The lower ends of arms are joined together with a bar 61 which supports brackets 62 withslots 63. A pin 64 is fitted in these slots and is mounted on the end of a rod 65 slidably fitted in the rear wall of the frame 19. The outer end of this rod is provided with a thumb head 66. A spring 67 pressing against a collar 68 on the rod tends to keep the rod in its extreme inside position with the thumb head resting against the frame.

y The paper drum 4 is provided with a handle 69 (Fig. 4).

The arm 27 has a handle 70.

Operation of my typewriting machine is as follows.

In a. normal operating position (Figs. 1 and 2 and plan view 4) the carriage rests with its front bar on the rollers 41 which are maintained in a fixed position on a system of ba-rs and links 43, 44, 47, and the key bars 51, one at each end of the typewriter frame, these key bars resting against the upper retaining lugs 54.

The Vcarriage support 16 is rotatively mounted on pins 17, the carriage frame with brackets 1 and the members 15 and 16 being joined together by means of balls 9 and 10.

In order to raise the carriage for typing capital letters the key bar 51 is depressed until it strikesthe lower rest 56. It is immaterial which of the key bars is depressed, one at the right or at the left of the machine, because if one is depressed, it raises the corresponding roller 41, thereby raising the front bar 40. The latter in turn will raise the other roller 41. The amount of lift is controlled by the distance between the rests 54 and 56 and the design of the transmitting links and arms, and is usually about The upper roller 6() will be moved together with the lower rollers and the supporting Vmembers 44, the pin 64 sliding in the slots In the operating position the carriage is moved along with each letter typed under action of a spring mechanism (not shown) as explained in my Patent No. 1,594, 768. The pinion 29 is acted upon by this spring and transmits the lateral pressure to the carriage through the rack 26. The carriage movement is practically frictionless, its front end sliding on the rollers 41 and the rear portion on the balls 9 and 10.

By pulling the thumb head 66 the arms 56 are turned on their pivots 57 until the roller 6() slides off from the bar 40 taking the position shown in Fig. 3. This releases the carriage, and the latter with its supports may be turned over on the pins 17 and outwards as shown, exposing the inside mechanism of the machine for cleaning, repairing, etc.

In this position the carriage may be completely removed by turning springs 20 and removing the pins 17. A new carriage with new supports may be then substituted of a different length if desired, as the same machine may be used with carriages of different length. The carriage movement is limited by the devices on the carriage itself which makes possible the use of different carriages with one machine. y

The use of ball bearings between the sliding portion of the carriage and the rotating bar with lugs simplifies the construction so that the machine needs not be longer than the carriage used with it.

I claim as my invention:

1. In a typewriting machine, the combination with carriage brackets of longitudinally extended front and rear frame members connected at their ends with said brackets, a supporting member rotatively mounted on the frame of said typewriting machine, ball bearings on the upper and lower surfaces of said supporting member, said rear longitudinal member being slidably supported on said ball bearings, a drum rotatively mounted on said brackets7 a plurality of rollers slidably supporting said front longitudinal member, means to support said rollers, an upper roller adapted to retain said front longitudinal member in an operating engagement with said supporting rollers, means to raise said supporting rollers with said upper roller, and means to release said upper roller from the engagement with said front longitudinal member.

2. In a typewriting machine, the combination with carriage brackets of longitudinally extended front and rear frame members connected at their ends with said brackets, a supporting member pivotally mounted on the frame of said typewriting machine, removable pivots for said supporting member, means to lock said pivots in their operating positions, ball bearing longitudinal races on the upper and lower surfaces of said supporting member, said rear longitudinal member being slidably supported on said ball bearing races, a drum rotatively mounted on said brackets, a plurality of rollers slidably supporting said front longitudinal member, a longitudinal bar supporting said rollers, key-bars supporting said longitudinal bar and rotatively mounted near the ends of the lll) frame of said typewriting machine, said longitudinal bar with said rollers being adapted to be raised When said key-bars are depressed, means to limit said movement of the key-bars, an upper roller adapted to retain said front longitudinal member in an operating engagement with said supporting rollers, a rotatively mounted bracket for said upper roller and lpivoted to said longitudinal bar with the rollers, and means to rotate said roller supporting bracket thereby releasing said front longitudinal member from said upper roller, said carriage brackets with said supporting member being adapted to be rotated away from said front supporting means.

3. In a typewriting machine, the combination with carriage brackets of longitudinally extending front and rear frame members connected at their ends With said brackets, the rear member being pivotally connected with the frame of said typewriting machine, rollers slidably supporting said front member, a longitudinal bar supporting said rollers, levers on each side oi' the machine pivoted to the frame, links connecting ends of said bar with said levers, key bars pivotally mounted at the sides of the frame, and links connecting said key bars with said links.

Ll. In a typewriting machine, the combina tion with carriage brackets of longitudinally extended front and rear frame members coniiected at their ends with said brackets, a supporting member, said rear longitudinal member being slidably mounted on said supporting member, said supporting member being rotatively mounted on the frame of said typewriting machine, a paper drum rotatively mounted on said brackets, means to slidably support said front longitudinal member in an operating position, and means to raise said front slidable support for typing capital letters, thereby rotating said rear supporting means on its pivots.

5. In a typewriting machine, the combination With carriage brackets, of longitudinally extending front and rear frame members connected at their ends with said brackets, a supporting member, said rear loiigitudinal member being slidably mounted on said supporting member', said supporting member being rotatively mounted on the i''rame oi' said typewriting machine, a paper drum rotatively mounted on said brackets, means to slidably support said front longitudinal member in an operating position, means to retain said front longitudinal member in an operative engagement with said support, and means to raise said support With said retaining means thereby raising said paper drum.

6. In a typewriting machine, the combina tion With carriage brackets of longitudinally extended front and rear frame members con nected with said bracketsand forming a carriage, a supporting meinberpivotally mounted on theri'rame of said typewriting machine, said rear longitudinal member be` ing slidably mounted on said supporting member, a paper drum rotatively mounted on said brackets, means to slidably support said front .longitudinal member in an operating position, means to retain said front supporting member in an engagement with said supporting means, and means to remove said retaining means from said front supporting member.

Signed at New York in the county or' New York and State of New York July A. D., 1926.

GREGORY K. BLOCK. 

